666252026 has 16 divisors (see below), whose sum is σ = 1093536288. Its totient is φ = 301923600.

The previous prime is 666252023. The next prime is 666252071. The reversal of 666252026 is 620252666.

It is not an unprimeable number, because it can be changed into a prime (666252023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38465 + ... + 53028.

It is an arithmetic number, because the mean of its divisors is an integer number (68346018).

Almost surely, 2^666252026 is an apocalyptic number.

666252026 is a deficient number, since it is larger than the sum of its proper divisors (427284262).

666252026 is a wasteful number, since it uses less digits than its factorization.

666252026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91837.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 666252026 is about 25811.8582438382. The cubic root of 666252026 is about 873.3993161822.

The spelling of 666252026 in words is "six hundred sixty-six million, two hundred fifty-two thousand, twenty-six".